362 GNATS OH MOSQUITOES — CHAPTER XIII 



? . — Head yellow, with narrow, hair-like, small yellow scales and 

 small black .and ochreous forked ones behind ; palpi clothed with yellow 

 scales, black at the apex ; clypeus yellow ; antenna; with basal joint 

 and base of the second joint yellowish, rest dark brown. Femora and 

 tibia; darker at their apices. The scales of the anterior pai-t of the 

 winfj are of typical form, but those on the forks of IV. and V. are almost 

 linear. Tarsal claws small, equal and suuple. Halteres ferruginous. 

 Length. — 5 to 6 nnn. 



Habitat. — Amazon Region, Brazil. 



4. T^NIORHYNCHUS AURITES, Theob. (Monog. II, p. 209). 



Wings uniformly very densely clothed with honey-yellow 

 scales of typical form. Tarsi black, with basal golden bands to 

 the first two joints. Thorax dusky yellow, with a darker median 

 line clothed with very long and narrow golden scales, and with 

 mai-ginal bristles, the latter specially dense at origin of wings. 

 Abdomen uniformly clothed with fiat golden scales. Proboscis 

 darker at apex and tip, but not obviously banded. The whole 

 insect of a beautiful honey-yellow tint. 



2 . — Head fawn coloured, witli narrow curved orange-yellow scales, 

 and deeper orange, long thin upriglit forked ones ; fiat orange scales at 

 the sides of the head ; palpi orange scaled, except at the tip, where there 

 are a few brown scales ; antenna; orange-yellow at the base, the basal 

 and next five joints being yellow, brown apicall^', the last few joints 

 being dark brown ; proboscis orange-brown, dark at the apex, and with 

 a few brown scales at the base. Legs yellow, the tips of the femora and 

 tibijc dark. Pleura; yellow, with an indistinct white longitudinal line. 

 Halteres yellow. Length. — 5 mm. 



Habitat. — Bonny, West Africa (May). 



5. TiENIORHYNCHUS ACER (Walker). (" List", p. 7.) 



Wings uniformly very densely clothed with very long brownish - 

 yellow scales. Tarsi uniformly dark metallic purple. Thorax 

 golden-yellow, with traces of brown markings ; abdomen orange- 

 yellow, the first four segments apically banded with metallic 

 purple and also traces on the other segments. In general appear- 

 ance resembles a Janthinosovia. 



$ . — Head brown, with testaceous scales, a pale border round the 

 eyes above, with some black and yellowish bristles ; eyes black ; basal 

 jomt of the antenna; yellowish, i-emamder brown ; palpi dark yellowish- 

 brown ; proboscis covered with black scales with a very dark purplish 

 reflection. Pleuraj pale reddish, dark beneath the wings. Legs with 

 coxaj orange-yellow ; femora orange-yellow at the base, apically metallic 

 black, rest of legs clothed with black scales showmg purplish and slight 

 golden reflections ; general appearance of legs sooty. 



